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TEST BOOKLET

CIVIL ENGINEERING

PAPER IIES-2011 UPSC (ESE)

INSTRUCTIONS

1. IMMEDIATELY AFTER THE COMMENCEMENT OF THE EXAMINATION, YOU

SHOULD CHECK THAT THIS TEST BOOKLET DOES NOT HAVE ANY

UNPRINTED OR TORN OR MISSING PAGES OR ITEMS ETC. IF SO, GET IT

REPLACED BY A COMPLETE TEST BOOKLET.

2. ENCODE CLEARLY THE TEST BOOKLET SERIES A, B, C OR D AS THE CASEMAY BE IN THE APPROPRIATE PLACE IN THE ANSWER SHEET.

3. You have to enter your Roll Number on the Test Booklet in the Box provided alongside.

DO NOT write anything else on the Test Booklet.

4. This Test Booklet contains 120 items (questions). Each item comprises four responses (answers).

You will select the response which you want to mark on the Answer Sheet. In case you feel that

there is more than one correct response, mark the response which you consider the best. In any

case, choose ONLY ONE response for each item.

5. You have to mark all your response ONLY on the separate Answer Sheet provided. See

direction in the Answer Sheet.

6. All items carry equal marks.

7. Before you proceed to mark in the Answer Sheet the response to various items in the Test

Booklet, you have to fill in some particulars in the Answer Sheet as per instructions sent to you

with your Admission Certificate.

8. After you have completed filling in all your responses on the Answer Sheet and the examination

has concluded, you should hand over to the Invigilatoronly the Answer Sheet. You are permitted

to rake away with you the Test Booklet.

9. Sheets for rough work are appended in the Test Booklet at the end.

10. Penalty for wrong answers :

THERE WILL BE PENALTY FOR WRONG ANSWERS MARKED BY A CANDIDATE IN

THE OBJECTIVE TYPE QUESTION PAPERS.

(i) There are four alternatives for the answer to every question. For each question for which a

wrong answer has been given by the candidate, one-third (0 .33) of the marks assigned to that

question will be deducted as penalty.

(ii) If a candidate gives more than one answer, it will be treated as a wrong answer even if one of the

given answers happens to be correct and there will be same penalty as above to that question.

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(iii) If a question is left blank, i.e., no answer is given by the candidate, there will be no penalty for

that question.

1. For different concrete specimens, each hydrated tot he same degree, the permeability is

(a) Higher with lower water cement ratio and higher cement content

(b) Lower with lower water cement ratio and higher cement content(c) Lower with higher water cement ratio and lower cement content

(d) Lower with higher water cement ratio and higher cement content

Ans: (b)

2. Modulus of elasticity of concrete is increased with

(a) Higher W/C ratio (b) Shorter curing period

(c) Lesser vibration (d) Increase in age

Ans: (d)

3. Increase-strain curve of concrete is

(a) A perfect straight line upto failure

(b) Straight line up to 0.002% strain value and then parabolic upto failure

(c) Nearly parabolic up to 0.002% strain value and the a straight line upto failure

(d) Hyperbolic up to 0.002% strain value and then a straight line upto failure

Ans: (c)

4. Match List I with List II and select the correct answer using the code given below the

lists:

List I ListII (Grade of cement & Age) (Compressions strength in Nlmm2)

A. Grade 33 (7 days) 1. 27

B. Grade 43 (28 days) 2. 43

C. Grade 53 (3 days) 3. 22

D. Grade 43 (7 days) 4. 33

Code:

A B C D

(a) 4 2 1 3

(b) 3 2 1 4

(c) 4 1 2 3

(d) 3 1 2 4

Ans: (b)

5. When percentage of mica present in sand is large, it

(a) Reduces the strength of mortar, or concrete

(b) Increases the strength of mortar or concrete

(c) Has no effect on mortar, or concrete strength

(d) Enhances the strength of mortar, or concrete, but only marginally

Ans: (c)

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6. Consider the following statements:

1. Dry rot in sap wood is caused by fungal attack

2. Brown rot in coniferous woods is a result of fungal attack3. Alternate wetting and drying of unseasoned timber causes powdery form of decay

in wood.

Which of these statements are correct?

(a) 1, 2 and 3 b)1 and 2 only c)2 and 3 only d)1 and 3 only

Ans: (a)

7. Which of the following statements refer to correct purpose as regards testing of concrete

by ultrasonic pulse velocity method?

1. To assess the quality of concrete in-situ.

2. To determine the dynamic modulus of elasticity of concrete.3. To locate the presence of cracks in it

(a) 1 and 2 only (b) 1 and 3 only (c) 2 and 3 only (d)1, 2 and 3

Ans: (d)

8. If W is the percentage of water required for normal consistency of cement, water to be

added for determination of initial setting time is

(a) 0.50 W (b) 0.62 W (c) 0.75 W (d) 0.85 W

Ans: (d)

9. Consider the following statements

Fibre saturation point in wood is reached when

1. Free water is removed 2. Cell water is removed

3. Shrinkage of wood is rapid 4. Strength gain is rapid


(a) 1, 2 and 3 (b) 1 and 2 only (c) 2 and 4 only (d) 1, 3 and 4

Ans: (d)

10. Which of the following theories of failure is most appropriate for a brittle

material?

(a) Maximum principal strain theory

(b) Maximum principal stress theory

(c) Maximum shear stress theory

(d) Maximum strain energy theory

Ans: (b)

11. A simply supported beam AB is subjected to a concentrated load at C, the

centre of the span. The area of the SF diagram from A to C will givea) BM at C b) Load at S

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c) SF at C d)Difference between BM values at A and C

Ans: (d)

12. In a strained material, the principal stresses in the X and Y directions respectively are

100 N/mm2 (Tensile) and 60 N/mm2 (Compressive). On an inclined plane, the normalto which makes an angle of 300 to the X-axis, the major principal stress, in N/mm2

would be

(a) 60 (b) 80 (c) 20 (d) 40

Ans: (c)

13. Which one of the following statements is correct?

(a) Principal stress is defined as the shear stresses on planes on which the normal stress

is maximum or minimum

(b) The centre of Mohrs circle for a two-dimensional stress system always lies in the y-

axis (adopting conventional axes notation).(c) The plane of maximum shear stress is inclined to the plane of principal stress at an

angle of 450

(d) In case of biaxial state of normal stresses, the normal stress on 45 0 plane is equal to

the sum of normal stresses.

Ans: (c)


1. Failure occurs beyond elastic limit

2. Rupture takes place immediately after elastic limit

3. Permanent set occurs beyond elastic limit

Which of these are considered in the theories of failure?

(a) 1, 2 and 3 (b) 1 and 3 only (c) 2 and 3 only d) 1 and 2 only

Ans: (d)

15. Consider the following salient points in a stress-strain curve of a mild steel bar:

1. Yield point 2. Braking point 3. Yield plateau

4 . Proportionality limit 5. Ultimate point

The correct sequence in which they occur while testing the mild steel bar in tension

from initial zero strain to failure is(a) 4, 1, 2, 3 and 5 (b) 1, 4, 3, 5 and 2 (c) 4, 1, 3, 5 and 2 (d) 1, 4, 2, 3 and 5

Ans: (c)

16. A pedestal of rectangular cross-section of size B x D is subjected to a vertical load

P. For the stress to be zero at the farthest point in the first quadrant of X-Y axes of the

section (with the origin at the symmetric midpoint) due to the load acting in the third

quadrant is bounded by the straight line.

(a)B

X6-D

Y6= 1 (b)

B

X6+D

Y6= -1

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(c)B

X6+D

Y6= 1 (d)

D

X6+B

Y6= 1

Ans: (d)

17. Match List I with List II and select the correct answer using the code given below

the listsList I List II

Mohrs Circle Stress System

A. 1.

B. 2.

C. 3.

D. 4.

Code:

A B C D

a) 2 4 1 3

b) 3 4 1 2

c) 2 1 4 3

d) 3 1 4 2

Ans: (c)

18. A uniformly distributed load (w) of length shorter than the span crosses a girder.

The bending moment at a section in the girder will be maximum when(a) Head of the load is at the section

5

x

x

x

x

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(b) Tail of the load is at the section

(c) Section divides the load in the same ratio as it divides the span

(d) Section divides the load in two equal lengths.

Ans: (c)

19.

The bending moment diagram for the above shown portal frame is

a) (b)

(c) (d)

Ans: (c)

20.

The truss is shown in figure. The cross-sectional area of each member is A and the

modules of elasticity of the material is uniformly E. The strain energy in the member

XY is given by

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(a)AE

Lp

6

2

(b)AE

Lp

3

2

(c) Zero (d)AE

Lp

2

2

Ans: (c)

21.

The force in the member CD is

(a) P Tensile

(b) P Compressive

(c) 2P Tensile

(d) 2P Compressive

Ans: (a)

22.

The influence line for vertical reaction at A of the beam is

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Ans: (a)

23. The moment capacity of section at plastic hinge equals

a) Yield moment

b) Zero

c) Fully plastic moment

d) Twice the yield moment

Ans: (c)

24. Which one of the following is the correct ratio of plastic moment to yield moment

for a simply supported beam of uniform square cross section throughout the span

(a) 1.5 (b) 1.7 (c) 2.0 (d) 2.34

Ans: (a)

25. A fixed beam with central point load undergoes a slight settlement at one end.

Select suitable answer from the following:

(a) Moment induced at both ends will be same

(b) Moment induced at the end that has undergone settlement will be maximum

(c) Moment induced will be maximum at the end having no settlement

(d) Zero moment at the end that has settled.

Ans: (c)

26. An increase in temperature on the top fibre of a simply supported beam will cause

(a) Downward deflection

(b) Upward deflection

(c) No deflection

(d) Angular rotation about neutral axis

Ans: (b)

27. The number of independent equations to be satisfied for static equilibrium in aspace structure is

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(a) 3 (b) 6 (c) 4 (d) 2

Ans: (b)

28. The loading on a beam is shown

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Ans: (a)

29. The correct bending moment diagram for the column is

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Ans: (c)

30. A propped cantilever AB of span L is subjected to a moment M at the prop end B.The moment at fixed end A is

(a) 2M (b)2

M(c) M (d)

4

3M

Ans: (b)

31. Which of the following steel sections should preferably be used at places where

torsion occurs?

(a) Box-type section (b) Channel section

(c) Angle section (d) Any of the above

Ans: (a)

32. The effective length of the fillet weld is

(a) Total length 2 x throat size (b) Total length 2 x weld size

(c) 0.7 x total length (d) Total length -

2

Weldsize

Ans: (b)

33. The compatibility conditions in terms of strains in a two-dimensional problem are

associated with

(a) Stresses (b) Forces(c) Properties of materials (d) Deformations

Ans: (d)

34. The material in which large deformation is possible before absolute failure by rupture

takes place, is known as

(a) Ductile (b) Plastic (c) Brittle (d) Elastic

Ans: (a)

35. The moment-distribution method in structural analysis falls in the category of(a) Displacement method (b) Force method

(c) Flexibility method (d) First order approximate method

Ans: (a)


Web crippling due to excessive bearing stress can be avoided by

1. Increasing the web thickness

2. providing suitable stiffeners

3. Increasing the length of the bearing plates

Which of these statements are correct?(a) 1 and 2 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3

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Ans: (d)

37. In the virtual work method of plastic analysis of steel structures, the virtualquantity is

(a) Slope (b) Moment (c) Load (d) Displacement

Ans: (d)

38. A protective or decorative non-structural element placed at the level of the truss

supports and column head is called

(a) Eaves girder (b) Baluster (c ) Eaves board (d) Tie girder

Ans: (c)

39. The purlins in roof trusses are placed at the panel points essentially to avoid

(a) Axial force in rafter (b) Shear force in rafter

(c ) Deflection in rafter (d) Bending moment in rafter

Ans: (d)

40. When the distance between centers of two adjacent rivets connecting the members

subjected to either compression or tension exceeds the maximum pitch, then the

additional rivets which are not subjected to the calculated stresses are known as

(a) Packing rivets (b) Long-grip rivets

(c) Tacking rivets (d) Auxiliary rivets

Ans: (c)

41. Which of the following conditions is to be satisfied both in elastic and plastic

analyses?

(a) Equilibrium condition (b) Yield condition

(c ) Plastic moment condition (d) Mechanism condition

Ans: (a)

42. The base of a column is subjected to moment. If the intensity of bearing pressure due

to axial load is equal to stress due to moment, then the bearing pressure between the

base and the concrete is

(a) Uniform compression throughout

(b) Zero at one end and compression at the other end

(c) Tension at one end and compression at the other end

(d) Compression, verying as a parabolic profile

Ans: (b)

43. The allowable shear stress in the web of mild steel beams decreases with(a) Decrease in h/t ratio (b) Increase in h/t ratio

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(c ) Decrease in thickness (d) Increase in height

Where h is the height and t is the thickness

Ans: (b)

44. The most critical consideration in the design of a rolled steel column carrying axialloads is the

(a) Percentage elongation at yield and the net cross-sectional area

(b) Critical bending strength and axial yield strength of material

(c) Buckling strength based on the net area of the section and percentage elongation at

ultimate load

(d) Compressive strength based on slenderness ratio and gross cross-sectional area.

Ans: (d)

45. For an I beam, the shape factor is 1.12. If the allowable stress (with factor of safety in

bending as 1.5) is increased by 20% for wind and earthquake loads, the modified loadfactor is

(a) 1.10 (b) 1.25 (c) 1.35 (d) 1.40

Ans: (d)

46. Top chord of a truss is continuous over joints lapart. Effective lengths of the member

in the plane perpendicular to the truss is

(a) 0.7 l (b) 0.85 l (c ) l (d) 1.5 l

Ans: (c)

47. The mechanism method and the statical method guide in estimating

(a) The lower and upper bounds respectively on the strength of structure

(b) The upper and lower bounds respectively on the strength of structure

(c) The lower bound on the strength of structure

(d) The upper bound on the strength of structure

Ans: (b)

48. If the shape factor of a section is 1.5 and the factor of safety to be adopted is 2, then

the load factor will be(a) 3 (b) 4 (c) 1.5 (d) 2

Ans: (a)

49.

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A tie bar 100 mm x 16 mm thick is to be welded to another plate as shown in figure using 8

mm fillet welds. If the tensile stress in plates is 150 N/mm2 and shear stress in weld is 110.0

N/mm2, minimum overlap required will be

(a) 50 mm (b) 75 mm (c) 100 mm (d) 150 mm

Ans: (c)50. A propped cantilever beam of span L and constant plastic moment Mp, carries a

concentrated load at midspan. The load at collapse will be

(a)L

MP

2(b)

L

Mp8(c)

L

MP

6(d)

L

MP

4

Ans: (c)

51. For two plates of equal thickness, full strength of square-edged fillet weld can be

ensured if its maximum size is limited to

(a) 1.5 mm less than the plate thickness

(b) 67% of the plate thickness

(c) 80% of the plate thickness

(d) Thickness of the plate

Ans: (a)

52. When a column is supported throughout its length either by masonry walls or by

construction on all the sides, then its slenderness ratio is

(a) Infinite (b) Zero

(c ) Reasonably high (d) Low

Ans: (b)

53. The allowable shear stress in stiffened webs of mild steel beams decreases with

(a) Decrease in the spacing of the stiffeners

(b) Increase in the spacing of the stiffeners

(c) Decrease in the effective depth

(d) Increase in the effective depth

Ans: (b)

54. In a roof truss, if pitch is and slope is 1, the angle of inclination with the horizontalwould be

(a) 300 (b) 450 (c ) 600 (d) 750

Ans: (b)

55. In a plastic hinge, the actual distribution of strain across the section is essentially as

(a) (b)

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(c) (d)

Ans: (a)56. Consider the following statements in respect of design of web and flange as splices:

1. Flange splice shall be designed for actual BM at the section.

2. Flange splice shall be designed to resist the actual shear at the section.

3. Web splice shall be designed to resist the actual shear at the section

4. Web splice shall be designed for actual BM.


(a) 1 and 3 (b) 2 and 3 (c) 3 and 4 (d)1 and 4

Ans: (a)

57. Lap length of reinforcement in compression shall not be less than(a) 30 (b) 24 (c) 20 (d) 15

Where = diameter of bar

Ans: (b)


lists:

List I List II

A. Doubly reinforced section 1. ServiceabilityB. Limit state design 2. Durability

C. Minimum cover 3. Reduction in sectional depth

D. Span-depth ratio 4. Ultimate moment capacity

Code:

A B C D

(a) 1 2 4 3

(b) 3 2 4 1

(c ) 1 4 2 3

(d) 3 4 2 1

Ans: (d)

59. The main reinforcement of a R.C. slab consists of 10 mm bars at 100 mm spacing; if

it is desired to replace the 10 mm bars by 12 mm bars, then the spacing of 12mm bars

should be

(a) 120 mm (b) 140 mm (c ) 144 mm (d) 160mm

Ans: (c)

60. In prestressed concrete members, the shear force depends upon

(a) Distributed load (b) Torsion

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(c) Concentrated load (d) Variation in net bending moment

Ans: (d)

61. In case of Magnel- Blaton system of prestressing, each sandwich plate can generallyanchor

(a) 6 wires (b) 8 wires (c) 10 wires (d) 16 wires

Ans: (a)

62. Inc case of prestressed concrete members, the bursting stresses develop at

(a) Bond zone (b) Maximum bending moment zone

(c ) Maximum shear stress zone (d) Anchorage zone

Ans: (d)

63. In limit state approach, spacing of main reinforcement controls primarily

(a) Cracking (b) Deflection (c ) Durability (d) Collapse

Ans: (a)

64. Minimum clear cover (in mm) to the main steel bars in slab, beam, column and

footing respectively, are

(a) 10, 15, 20 and 25 (b) 15, 25, 40 and 75

(c ) 20, 25, 30 and 40 (d) 20, 35, 40 and 75

Ans: (b)

65. Shear resistance of concrete in a reinforced concrete beam is dependent on

(a) Tension reinforcement in the beam

(b) Compression reinforcement in the beam

(c ) Shear reinforcement in the beam

(d) None of the reinforcements in the beam

Ans: (a)

66. A prestressed concrete section is said to have failed in strength at the moment whenall the material in the section has exhausted its

(a) Stress limitations

(b) Strain limitations

(c) Stress as well as strain limitations

(b) Laad limitations

Ans: (a)

67. The minimum wall thickness of any load bearing wall in case of public building built

with mortar, as per IS code, should be not less than

(a)2

1 brick (b) 1 brick (c ) 12

1 brick (d) 2 brick

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Ans: (c)

68. The position of the neutral axis in reinforced brick masonry is independent of the

loading and is at a depth of(a) One-third of the effective depth

(b) Half of the effective depth

(c) Full depth

(d)2

1times the effective depth

Ans: (a)

69. Maximum slenderness ratio for load-bearing masonry wall in cement mortar, as per IS

code, shall not exceed.

(a) 13 (b) 20 (c) 27 (d) 30

Ans: (c)

70. As per masonry code, the stiffening coefficient for walls stiffened by piers, buttresses

or intersecting walls can be

(a) 0 to 1.0 (b) 1.0 to 2.0 (c ) Greater than 2.0 (d) Invariantly 1.0

Ans: (b)

71. Consider the following statements:Maximum slenderness ratio of load-bearing masonry walls for a dwelling having

more than two storeys shall not exceed.

1. 12, if lime mortar is used

2. 18, if cement-lime mortar 1:2:9 is used

3. 24, if cement mortar 1:6 is used\


(a) 1 and 2 only b) 2 and 3 only c) 1 and 3 only d)1, 2 and

3

Ans: (b)

72. The loss due to relaxation of stress in steel in PSC member depends on

1. Applied stress level

2. Temperature

3. Type of steel

(a) 1 and 2 only (b) 2 and 3 only

( c) 1, 2 and 3 (d) 1 and 3 only

Ans: (c)

73. The transmission length requirement is to be satisfied in the design of

(a) Pre-tensioned concrete beams(b) Post-tensioned concrete beam

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(c) Unbonded post-tensioned concrete

(d) Post-tensioned continuous concrete beams

Ans: (a)

74. Which one of the following statements is not correct with respect to PSC beams?(a) Loss due to shrinkage is proportional to water-cement ratio used in concrete

(b) Loss due to creep is proportional to the age of the member at the time of loading.

(c) Loss due to elastic deformation is directly proportionally to the modulus of

elasticity of concrete

(d) Loss due to friction occurs in post tensioned concrete members

Ans: (c)

75. In limit state design of concrete for flexure, the area of stress block is taken as

(a) 0.530 fck. Xu (b) 0.446 fck . Xu

( c) 0.420 fck .Xu (d) 0.360 fck . XuWhere fck is characteristic compressive strength of concrete and Xu is the depth of

neutral axis from top.

Ans: (d)

76. In a combined footing, in the zones where the shear stresses are less than 5 kg/cm2,

stirrups to be provided are generally

(a) 2 legged (b) 4-legged (c) 8 legged (d) 12 legged

Ans: (b)

77. The purpose of lateral ties in short R.C. columns is to

(a) Increase the load carrying capacity of column

(b) Facilitate compaction of concrete

(c) Facilitate construction

(d) Avoid buckling of longitudinal bars

Ans: (d)

78. The number of plastic hinges required in a structure of indeterminate status for a

mechanism to develop is(a) i (b) i + 1 ( c) i + 2 (d) i 1

Where i' is the degree of indeterminacy

Ans: (b)

79. According to IS 456, minimum slenderness ratio for a short concrete column is

(a) Less than 12 (b) Between 12 and 18

(c) Between 18 and 24 (d) More than 24

Ans: (a)

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80. For a continuous slab of 3 m x 35 m size, the minimum overall depth of slab to satisfy

vertical deflection limits is

(a) 120 mm (b) 100 mm (c) 75 mm (d) 50 mm

Ans: (a)

81. The effective length of a R.C column continuing through two storeys, properly

restrained at both ends in position and direction, is

(a) 0.50 L (b) 0.75 L (c) L (d) 2 L

Ans: (b)

82. A reinforced concrete slab is 75 mm thick. The maximum size of reinforcement bar

that can be used is

(a) 6 mm diameter (b) 8 mm diameter

(c) 10 mm diameter (d) 12 mm diameter

Ans: (b)

83. A reinforced concrete cantilever porch has thickness t. The main reinforcing steel will

be placed

(a) At mid-thickness (b) At t/3 from the top

(c) Close to the bottom surface (d) Close to the top surface

Ans: (d)

84. A simply supported rectangular beam is uniformly loaded and is prestressed. The

tendon provided for prestressing should be

(a) Straight, above centroidal axis

(b) Straight, below centroidal axis

(c) parabolic, with convexity upward

(d) Parabolic, with convexity downward

Ans: (d)

85. For a certain set of external loads, concordant profile in a prestressed beam represents

to some scale the

(a) Influence line diagram (b) Shear force diagram(c) Bending moment diagram (d) Williot-Mohr diagram

Ans: (c)


Cement mortars richer than 1 : 3 are not used in masonry work because

1. There is no gain in strength of masonry

2. There is high shrinkage

3. They are prone to segregation


(a) 1, 2 and 3 (b) 1 and 2 only(c) 2 and 3 only (d) 1 and 3 only

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Ans: (b)


Percentage of steel for balanced designed of a singly reinforced rectangular section by

limit state method depends on

(1) Characteristic strength of concrete

(2) Yield strength of concrete

(3) Modulus of elasticity of steel

(4) Geometry of the section.


(a) 2, 3 and 4 (b) 1, 3 and 4

(c) 1, 2 and 4 (d) 1, 2 and 3

Ans: (b)

88. The minimum strain at failure in the tensile reinforcement (Fy = 400 MPa) of RCC

beam as per limit state method is

(a) 0.0020 (b) 0.0028

(c) 0.0037 (d) 0.0045

Ans: (c)

89. A bar chart is commonly used because

(a) It is simple to draw and easy to understand

(b) It indicates at a glance the overall progress of the project

(c) It shows critical and non-critical activities

(d) It incorporates uncertainties for delay in estimation of time required for

completion of activities.

Ans: (a)

90. Which one of the following rollers is suitable for soil-cement stabilized road

construction?

(a) Vibratory roller (b) Sheepfoot roller (c) Pneumatic roller (d) Smooth wheel roller

Ans: (c)

91. In a group housing project, it is proposed to use pre-fabricated RCC beams and

columns. The most useful construction equipment is

(a) Derrick Crane (b) Chute

(c) Weigh Batcher (d) Transit Mixer

Ans: (a)

92. Tractive coefficient of a Crawler truck in loose soil is

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(a) Less than that of rubber tyre tractors

(b) More than that of rubber tyre tractors

(c) Same as that of rubber tyre tractors

(d) Nearly zero

Ans: (d)93 The thickness of web for unstiffened plate girder with clear distanced between the

flanges shall be not less than

(a)200

d(b)

85

d( c)

100

d(d)

160

d

Ans: (b)

94. The maximum longitudinal pitch in bolted joints, subjected to tensile forces, wherein

t = thickness of the plate and D = diameter of bolt, is

(a) 32 D (b) 16 D (c) 32 t (d) 16 t

Ans: (d)

95. A centrifugal pump 18 cm diameter, running at 1460 rpm delivers 0.096 m3/sec water

against a head of 36 m of water with an efficiency of 86%. If another pump, twice the

size of this said pump, is run at the same speed, how much water would the bigger

pump deliver and at what head of water? (Take 3 2 = 1.26)

(a) 0.192m3/sec and 45.36 m (b) 0.192m3/sec and 90.72 m

(c) 0.384 m3/sec and 45.36 m (d) 0.384 m3/sec and 90.72 m

Ans: (d)

96.

In the network shown above, the number on the arrow gives the duration of the

activity. The earliest expected time for event 6 to be attached is

(a) 22 (b) 27 (c) 23 (d) 24

Ans: (b)

97.

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Consider a series of activities A, B, C, D and E comprising a project wherein, a, m, b

durations of each activity are indicated. What is the probability of completing the

project in 45 days? The area under the normal probability curve is indicated in the

table by adopting standard notations.

Z 1.0 0.8 0.6 0.4 0.2 0.0

X 0.841 0.788 0.725 0.655 0.579 0.500

(a) 0.20 (b) 0.23 (c) 0.26 (d) 0.29

Ans: (d)

98. Which one of the following is the objective in crashing?

(a) Reduction in duration (b) Reduction in resources

(c) Reduction in cost (d) Reduction in project size

Ans: (c)

99. If the depth of actual axis in a beam is more than the depth of critical axis, then the

beam is called

(a) Over reinforced beam (b) Under-reinforced beam

(c) Balanced beam (d) Deep beam

Ans: (a)

100.

Consider the three activities indicated in sequence. The possible alternatives for

individual durations (D) in days, and the corresponding cost of resource consumption

in units of money per day (R ) respectively, are also indicated beside the activities.

Overhead costs are to be added at 12 units of money per day of duration. What is the

most optimal total cost including overheads, if all the activities are to be completed in

either 22 or 21 days?(a) 466 units of cost (b) 460 units of cost

(c)453 units of cost (d) 450 units of cost

Ans: (c)

101. In a R.C section under flexure, the assumption that a plane section before bending

remains plane after bending leads to

(a) Strain distribution being linear across the depth

(b) Stress distribution being linear across the depth

(c) Both stress and strain distribution being linear across the depth

(d) Shear stress distribution being uniform along the depth

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Ans: (a)

102. Critical path moves along the activities having total float as

(a) Positive (b) Negative ( c) Zero (d) Unity

Ans: (c)103. The probability distribution taken to represent the completion of time in PERT

analysis is

(a) Normal Distribution (b) Bet Distribution

(c) Gamma Distribution (d) Gaussain Distribution

Ans: (a)

104. The output from a power shovel is 144 cum/hr. The required number of trucks of 12

cum capacity each with 16 minute cycle time and with 80% operating efficiency will

be

(a) 5 (b) 4 (c) 3 (d) 2

Ans: (c)

105. A supercharger is used in the engines of earthmoving machines at higher altitudes

because

(a) The ambient atmospheric pressure is less at higher altitudes

(b) Four-cycle engines depend on the suction of the engines for the supply of air

(c) Two-cycle engines are not rugged enough for higher altitude

(d) The ambient temperature is less as the altitude is higher

Ans: (a)

106. A contractor wishes to determine a suitable combination of manual labour and

machine work for the excavation of a multistory construction. For every cum of

excavation, 3 man-hours are needed; or 0.2 machine-hour. Costs involved are Rs. 20

per man-hour and Rs. 500 per machine-hour. The total quantity of excavation is

estimated to be 4,000 cum. The optimal quantity of excavation to be done manually

for minimum total cost will be

(a) 1500 cum (b) 1800 cum (c) 2250 cum (d) 2500 cum

Ans: (d)

107 Match List I with List II and select the correct answer using the code given below the

lists:

List I List II

A. Concrete pumps 1. Ready Mix concrete

B. Agitating trucks 2. Multi-storey concreting works

C. Transit Mixer 3. Tunnel works

D. Crane Bucket 4. Built up and busy area

Code:

A B C D

(a) 3 4 1 2(b) 2 1 4 3

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(c) 3 1 4 2

(d) 2 4 1 3

Ans: (d)


lists:

List I List II

A. Crawler-mounted 1. Limiting load is within 75%

lifting cranes of tipping load

B. Rubber-tire mounted 2. Allow use of dipper with its stick

Lifting cranes

C. Drag lines with 1.34 cum 3. Time taken in swinging between

Bucket, digging and loading 450 to 1800 is 23 to 35 seconds

In gravel

D. Power shovel converted 4. Limiting load is up to 85% of tippingInto hoe load

Code

A B C D

(a) 1 3 4 2

(b) 2 3 4 1

(c) 1 4 3 2

(d) 2 4 3 1

Ans: (c)

109. Slack time is associated with

(a) A real activity (b) An event

(c) Both event and real activity (d) Dummy activity

Ans: (b)

110. A crane is purchased now; its useful life is 8 years after which a new crane must be

purchased. If the interest rate is 6%, the capital recovery factor (crf) is

(a) 0.3141 (b) 0.5420 (c) 0.1610 (d) 0.1259

Ans: (c)

111. If the effective length, effective height and effective thickness of a masonry wall are

l, h and to respectively; then the slenderness ratio of the wall shall be

(a)t

l(b)

t

h(c ) Larger of

t

land

t

h(d) Smaller of

t

land

t

h

Ans: (d)

112. Which one of the following statements is correct?

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(a) Adding 5% to 6% of moisture by weight increases the volume of dry sand from

18% to 38%

(b) The bulking of fine sand is more than that of coarse sand

(c ) Volume of fully saturated sand is equal to that of dry sand

(d) All of the above

Ans: (d)

113. What is the distance away from midspan of a plastic hinge if developing in a simply

supported beam of rectangular cross-section and span 6 m, subjected to a point load

at the centre?

(a) Zero (b) 1 m (c) 2 m (d) 3 m

Ans: (a)

Directions: Each of the next seven (07) items consists of two statements, one labelled as

the Assertion (A) and the other as Reason (R ). You are to examine these

two statements carefully and select the answers to these items using the codesgiven below:

Codes:

(a) Both A and R are individually true and R is the correct explanation of A

(b) Both A and R are individually true but R is not the correct explanation of A

(c) A is true but R is false

(d) A is false but R is true

114. Assertion (A) : Pumps for concreting are generally of the positive displacement

category

Reason (R) : Roto-dynamic pumps may effect more crushing of the coarse

aggregate

Ans: (b)

115. Assertion (A) : The tests for determining the setting times of coments are of

little use in assessing the hardening of cement concrete

Reason (R) : Ultimate strength of concrete in-situ is not dependent upon the

setting times of cement used.

Ans: (b)

116. Assertion (A) : A material is incompressible if its Poissons ratio is 0.5Reason (R) : The Bulk modulus K is related to Modulus of elasticity E and

to Poissons ratio as per well known relationship

Ans: (b)

117.

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Assertion (A) : For the frame shown above, the BM at every cross-section is zero

Reason (R) : The shape of the structure follows the funicular polygon

Ans: (d)

118.

Assertion (A) : The propped cantilever beam shown in figure above is adeterminate structure.

Reason (R) : At the internal hinge shown, there exists a shear transfer and no

bending moment.

Ans: (a)

119. Assertion (A) : In a plate girder of uniform cross-section, intermediate vertical

stiffeners are provided at closer spacing in the middle rather

than at supports.

Reason (R ) : Intermediate vertical stiffeners are provided to prevent the web

from buckling under a complex and variable stress situation

resulting from combined action of shear force and bendingmoment.

Ans: (a)

120. Assertion (A) : Centrifugal pumps are not normally usable for pumping mixed

concrete even if the concrete (to be pumped) can be dropped in

by a hopper system.

Reason (R ) : When dropping (mixed) concrete, segregation of aggregates

may occur.

Ans: (b)

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